Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden of behavioral disclosure. It simply says 'Get credit ratings' with no mention of whether the operation is read-only, what data is returned (e.g., ratings from specific agencies), pagination, rate limits, or any side effects. This is minimal and does not enrich the agent's understanding beyond the tool's basic function.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.